A column 450 mm x 450 mm square supports a dead load of 1000 kN and a live load of 780 kN. The allowable soil bearing pressure is 240 kPa. The base of the footing is 1.5 m. below the grade. Assume weight of concrete to be 24 kN/m³ and that of soil to be 18 kN/m³. The total depth of footing is 600 mm with a steel covering of 100 mm. Which of the following gives the effective soil pressure. 2 Which of the following gives the dimension of the footing. Which of the following gives the moment at critical section.

A column 450 mm x 450 mm square supports a dead load of 1000 kN and a live load of 780 kN. The allowable soil bearing pressure is 240 kPa. The base of the footing is 1.5 m. below the grade. Assume weight of concrete to be 24 kN/m³ and that of soil to be 18 kN/m³. The total depth of footing is 600 mm with a steel covering of 100 mm. Which of the following gives the effective soil pressure. 2 Which of the following gives the dimension of the footing. Which of the following gives the moment at critical section.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter11: Load And Resistance Factor Design (lrfd)

Section: Chapter Questions

Problem 11.1P: A continuous foundation is required in a soil where c=10kN/m2, =26, and =19.0kN/m3. The depth of the...

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Concept explainers

Design criteria for structural loading

The different loads such as loads due to self-weight (dead load) and external loads such as live load, wind loads, seismic load, snow load, and other loads and load combinations that influence the design of a building are called structural loading. The nature of the applied load differs from changes in the location, design, and type of materials used. The design criteria require that structures must be designed and constructed to be able to withstand all load types that are expected to act upon the structure and render its usage for the designated purpose. The structural members such as beams, slabs, columns, and foundations help the structure to withstand the applied load. There are different institutes such as ASCE and ACI that provide building design codes to assure minimum safety requirements and quality of the structures.

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THE EXPECTED ANSWERS ARE THE FF:
1.) 209.40 Kpa

2.) 2.92 x 2.92 m
3.) 452.88Kn-m

A column 450 mm x 450 mm square supports a dead load of 1000 kN and a
live load of 780 kN. The allowable soil bearing pressure is 240 kPa. The
base of the footing is 1.5 m. below the grade. Assume weight of concrete to
be 24 kN/m³ and that of soil to be 18 kN/m³. The total depth of footing is
600 mm with a steel covering of 100 mm.
Which of the following gives the effective soil pressure.
? Which of the following gives the dimension of the footing.
Which of the following gives the moment at critical section.

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A column 450 mm x 450 mm square supports a dead load of 1000 kN and a live load of 780 kN. The allowable soil bearing pressure is 240 kPa. The base of the footing is 1.5 m. below the grade. Assume weight of concrete to be 24 kN/m3 and that of soil to be 18 kN/m3. The total depth of footing is 600 mm with a steel covering of 100 mm. a. What is the dimension of the square footing? b. What is the safe depth of footing if f'c=21MPA?